What does Chapter 6 say about the Sadguru's role in helping a devotee overcome their ego and achieve spiritual realization?

According to Chapter 6, the Sadguru plays a pivotal role in dismantling the devotee's ego to facilitate spiritual realization. The text describes how the touch of the Guru's hand can burn the 'subtle body (ego) into ashes.' It further explains that the Sadguru helps dissolve the sense of 'me and mine,' awakening the consciousness of 'I am He' (Soham). This process leads to the manifestation of non-duality (Advaita). The author also notes that whenever his own ego would 'peep out' during the writing process, Sai Baba would suppress it with His own hand, bestowing His power to make the disciple fulfilled.